Metallurgy

Based on real world metal ores, and their use - BUT changed to suit me :) Even so these are just notes, and won't hold for every single site.

Metal Ores

PPM = Parts per Million of the earth's crust. High numbers mean higher frequency.

Metal	Notes	PPM
Iron	One of the world’s most common metals - found just about everywhere. Frequently mined in single metal sites by humans. (add carbon to make steel) weapons, armour - Other uses include cooking pots, hinges, hardware etc. tailings are also high in other useful metals such as copper, nickel, and cobalt. Gem Stone = Hematite	56300
Zinc	Common co-products in zinc ores include minerals of lead and silver. Other mines may produce zinc minerals as a by-product of the production of ores containing more valuable minerals or metals, such as gold, silver or copper. Gems: rhodochrosite. Use as a major additive for bronze.	70
Copper	A common metal. Used for coins, common jewellery, cooking pots, Mugs, plates etc. A a core component of Bronze, and the Economny.	60
Lead	often found in association with Silver. (ore = Galena) used for Sling Bullets, water pipes, shielding from magic/scrying, coffins, malleability, water resistance, stained glass. (etc) The main lead-bearing mineral is galena (PbS), which is mostly found with zinc ores. Arsenic, tin, antimony, silver, gold, copper, bismuth are common impurities in lead minerals. Other minerals in association are sphalerite, marcasite, chalcopyrite, cerussite, anglesite, dolomite, calcite, quartz, barite, and fluorite.	14
Tin	Mix it with Copper to make traditional bronze, however it is a fairly rare metal - makes Zinc more important. Gems associated with Tin mines include tourmaline, topaz,	2.3
Silver	Not as common as Copper, not more common than gold. Often found in association with lead. Other sources of silver are the ores of copper, copper-nickel, lead, and lead-zinc. Uses: average jewellery, small plaques/decoration/statuary etc (alloyed with copper to make sterling silver – it can be used for instruments, vases etc etc)	0.075
Gold	coins, expensive jewellery, small plaques/decoration/statuary etc. Gold ore dumps are the source of many heavy elements such as cadmium, lead, zinc, copper, arsenic, selenium and mercury.	0.004
Bronze (alloy)	Includes Arsenical Bronze (from these ores: Olivenite, Enargite, Tennantite) and Bronze (Copper/Tin from Stannite or separate ores) as it is more frequent, some Zinc is added to most Dwarven Bronze mixes. Brass (Copper / Zinc from separate ores) is also treated as bronze. Bronze (of any sort) is hard enough for weapons and armour, but with a risk of breaking - however, this isn't too much of an issue with arrow, bolt, spear, javelin, darts heads :). Other uses include cooking pots, hinges, hardware etc.

Gems and precious stones

Distribution has been changed to reflect the Gem Values, rather than Real World distribution. Here, the more valuable a mineral, the further underground it is found.

Q =Quartz - is not particularly associated with any metals. Place just about anywhere. C = Copper Ore – These minerals are also a form of Copper Ore

Gemstone Distribution
From any mine-hold
Low-Quality Gems (10 gp): agates Q; azurite C; blue quartz Q; hematite (from Iron Ore); lapis lazuli; malachite C; obsidian; rhodochrosite; tigereye Q; turquoise C
From Great or Good mine-holds below this line.
Semi-Precious Gems (50 gp): bloodstone Q; carnelian Q; chalcedony Q; chrysoprase Q; citrine Q; jasper Q; moonstone; onyx Q; peridot; rock crystal (clear quartz); sard; sardonyx; rose, smoky, or star rose quartz Q; zircon
Medium Quality Gemstones (100 gp): amethyst Q; chrysoberyl; red or brown-green garnet; jade; jet; red, red-brown, or deep green spinel; tourmaline
Only from Great Mine holds – below this point
High Quality Gemstones (500 gp): alexandrite; aquamarine; violet garnet; deep blue spinel; golden yellow topaz
Jewels (1,000 gp): emerald; white, black, or fire opal; blue sapphire; fiery yellow or rich purple corundum; blue or black star sapphire
Grand Jewels (5,000 gp or more): clearest bright green emerald; diamond; jacinth; ruby